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Table 1 Summary of annotation results for 142 randomly selected cotton BACs

From: A preliminary analysis of genome structure and composition in Gossypium hirsutum

Total number of BACs analyzed

142

Combined BAC lengths

14.2 Mb

Amount of identified repetitive DNA (percentage)

5.7 Mb (40.1%)

Amount of unidentified DNA with predicted ORFs structure (Nos, percentage)

1.4 Mb (1653, 9.9%)

Unidentified ORFs that show collinearity with cotton EST database (percentage)

208 (12.6%)

Number of genes with similarity or collinearity support

412

Number of hypothetical genes with low similarity or collinearity support

46

Overall gene density

One gene per 34.5 kb

Number of estimated total cotton genes

More than 70,000